From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Replace direct access to the pipe field in drivers with a new helper
function. This will allow easier refactoring of media pipeline handling
in the MC core behind the scenes without affecting drivers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
drivers/media/mc/mc-entity.c | 6 ++++++
.../platform/renesas/rcar-vin/rcar-core.c | 5 ++---
.../media/platform/renesas/rcar-vin/rcar-dma.c | 2 +-
drivers/media/platform/ti/omap3isp/isp.c | 4 +---
drivers/media/platform/ti/omap3isp/ispvideo.c | 3 +--
drivers/media/platform/ti/omap3isp/ispvideo.h | 11 +++++++++--
drivers/media/platform/xilinx/xilinx-dma.c | 3 +--
drivers/media/platform/xilinx/xilinx-dma.h | 7 ++++++-
drivers/staging/media/imx/imx-media-utils.c | 2 +-
drivers/staging/media/omap4iss/iss.c | 4 +---
drivers/staging/media/omap4iss/iss_video.c | 3 +--
drivers/staging/media/omap4iss/iss_video.h | 11 +++++++++--
include/media/media-entity.h | 18 ++++++++++++++++++
13 files changed, 57 insertions(+), 22 deletions(-)
diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c
index 9f4a1c98dc43..50872d953cf9 100644
--- a/drivers/media/mc/mc-entity.c
+++ b/drivers/media/mc/mc-entity.c
@@ -923,6 +923,12 @@ int media_entity_get_fwnode_pad(struct media_entity *entity,
}
EXPORT_SYMBOL_GPL(media_entity_get_fwnode_pad);
+struct media_pipeline *media_entity_pipeline(struct media_entity *entity)
+{
+ return entity->pipe;
+}
+EXPORT_SYMBOL_GPL(media_entity_pipeline);
+
static void media_interface_init(struct media_device *mdev,
struct media_interface *intf,
u32 gobj_type,
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
index 49bdcfba010b..7b12af3ed8fb 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
@@ -786,9 +786,8 @@ static int rvin_csi2_link_notify(struct media_link *link, u32 flags,
return 0;
/*
- * Don't allow link changes if any entity in the graph is
- * streaming, modifying the CHSEL register fields can disrupt
- * running streams.
+ * Don't allow link changes if any stream in the graph is active as
+ * modifying the CHSEL register fields can disrupt running streams.
*/
media_device_for_each_entity(entity, &group->mdev)
if (media_entity_is_streaming(entity))
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
index 6644b498929d..924907b71263 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
@@ -1281,7 +1281,7 @@ static int rvin_set_stream(struct rvin_dev *vin, int on)
*/
mdev = vin->vdev.entity.graph_obj.mdev;
mutex_lock(&mdev->graph_mutex);
- pipe = sd->entity.pipe ? sd->entity.pipe : &vin->vdev.pipe;
+ pipe = media_entity_pipeline(&sd->entity) ? : &vin->vdev.pipe;
ret = __media_pipeline_start(&vin->vdev.entity, pipe);
mutex_unlock(&mdev->graph_mutex);
if (ret)
diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c
index 4c937f3f323e..2b5310b07bc3 100644
--- a/drivers/media/platform/ti/omap3isp/isp.c
+++ b/drivers/media/platform/ti/omap3isp/isp.c
@@ -937,10 +937,8 @@ static int isp_pipeline_is_last(struct media_entity *me)
struct isp_pipeline *pipe;
struct media_pad *pad;
- if (!me->pipe)
- return 0;
pipe = to_isp_pipeline(me);
- if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED)
+ if (!pipe || pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED)
return 0;
pad = media_entity_remote_pad(&pipe->output->pad);
return pad->entity == me;
diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.c b/drivers/media/platform/ti/omap3isp/ispvideo.c
index 8811d6dd4ee7..44b0d55ee5d8 100644
--- a/drivers/media/platform/ti/omap3isp/ispvideo.c
+++ b/drivers/media/platform/ti/omap3isp/ispvideo.c
@@ -1093,8 +1093,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
/* Start streaming on the pipeline. No link touching an entity in the
* pipeline can be activated or deactivated once streaming is started.
*/
- pipe = video->video.entity.pipe
- ? to_isp_pipeline(&video->video.entity) : &video->pipe;
+ pipe = to_isp_pipeline(&video->video.entity) ? : &video->pipe;
ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev);
if (ret)
diff --git a/drivers/media/platform/ti/omap3isp/ispvideo.h b/drivers/media/platform/ti/omap3isp/ispvideo.h
index a0908670c0cf..1d23df576e6b 100644
--- a/drivers/media/platform/ti/omap3isp/ispvideo.h
+++ b/drivers/media/platform/ti/omap3isp/ispvideo.h
@@ -99,8 +99,15 @@ struct isp_pipeline {
unsigned int external_width;
};
-#define to_isp_pipeline(__e) \
- container_of((__e)->pipe, struct isp_pipeline, pipe)
+static inline struct isp_pipeline *to_isp_pipeline(struct media_entity *entity)
+{
+ struct media_pipeline *pipe = media_entity_pipeline(entity);
+
+ if (!pipe)
+ return NULL;
+
+ return container_of(pipe, struct isp_pipeline, pipe);
+}
static inline int isp_pipeline_ready(struct isp_pipeline *pipe)
{
diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index 338c3661d809..72eff5ef626b 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -402,8 +402,7 @@ static int xvip_dma_start_streaming(struct vb2_queue *vq, unsigned int count)
* Use the pipeline object embedded in the first DMA object that starts
* streaming.
*/
- pipe = dma->video.entity.pipe
- ? to_xvip_pipeline(&dma->video.entity) : &dma->pipe;
+ pipe = to_xvip_pipeline(&dma->video.entity) ? : &dma->pipe;
ret = media_pipeline_start(&dma->video.entity, &pipe->pipe);
if (ret < 0)
diff --git a/drivers/media/platform/xilinx/xilinx-dma.h b/drivers/media/platform/xilinx/xilinx-dma.h
index 2378bdae57ae..3ea10f6b0bb9 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.h
+++ b/drivers/media/platform/xilinx/xilinx-dma.h
@@ -47,7 +47,12 @@ struct xvip_pipeline {
static inline struct xvip_pipeline *to_xvip_pipeline(struct media_entity *e)
{
- return container_of(e->pipe, struct xvip_pipeline, pipe);
+ struct media_pipeline *pipe = media_entity_pipeline(e);
+
+ if (!pipe)
+ return NULL;
+
+ return container_of(pipe, struct xvip_pipeline, pipe);
}
/**
diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index 94bc866ca28c..5d9c6fc6f2e0 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -871,7 +871,7 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
__media_pipeline_stop(entity);
} else {
v4l2_subdev_call(sd, video, s_stream, 0);
- if (entity->pipe)
+ if (media_entity_pipeline(entity))
__media_pipeline_stop(entity);
}
diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index 68588e9dab0b..77760d913b49 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -548,10 +548,8 @@ static int iss_pipeline_is_last(struct media_entity *me)
struct iss_pipeline *pipe;
struct media_pad *pad;
- if (!me->pipe)
- return 0;
pipe = to_iss_pipeline(me);
- if (pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED)
+ if (!pipe || pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED)
return 0;
pad = media_entity_remote_pad(&pipe->output->pad);
return pad->entity == me;
diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
index d0da083deed5..67d63a400fa2 100644
--- a/drivers/staging/media/omap4iss/iss_video.c
+++ b/drivers/staging/media/omap4iss/iss_video.c
@@ -870,8 +870,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
* Start streaming on the pipeline. No link touching an entity in the
* pipeline can be activated or deactivated once streaming is started.
*/
- pipe = entity->pipe
- ? to_iss_pipeline(entity) : &video->pipe;
+ pipe = to_iss_pipeline(&video->video.entity) ? : &video->pipe;
pipe->external = NULL;
pipe->external_rate = 0;
pipe->external_bpp = 0;
diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h
index 526281bf0051..ca2d5edb6261 100644
--- a/drivers/staging/media/omap4iss/iss_video.h
+++ b/drivers/staging/media/omap4iss/iss_video.h
@@ -90,8 +90,15 @@ struct iss_pipeline {
int external_bpp;
};
-#define to_iss_pipeline(__e) \
- container_of((__e)->pipe, struct iss_pipeline, pipe)
+static inline struct iss_pipeline *to_iss_pipeline(struct media_entity *entity)
+{
+ struct media_pipeline *pipe = media_entity_pipeline(entity);
+
+ if (!pipe)
+ return NULL;
+
+ return container_of(pipe, struct iss_pipeline, pipe);
+}
static inline int iss_pipeline_ready(struct iss_pipeline *pipe)
{
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 4e4fec60bf97..96f5fcda1985 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -883,6 +883,24 @@ static inline bool media_entity_is_streaming(const struct media_entity *entity)
return entity->pipe;
}
+/**
+ * media_entity_pipeline - Get the media pipeline an entity is part of
+ * @entity: The entity
+ *
+ * This function returns the media pipeline that an entity has been associated
+ * with when constructing the pipeline with media_pipeline_start(). The pointer
+ * remains valid until media_pipeline_stop() is called.
+ *
+ * In general, entities can be part of multiple pipelines, when carrying
+ * multiple streams (either on different pads, or on the same pad using
+ * multiplexed streams). This function is ill-defined in that case. It
+ * currently returns the pipeline associated with the first pad of the entity.
+ *
+ * Return: The media_pipeline the entity is part of, or NULL if the entity is
+ * not part of any pipeline.
+ */
+struct media_pipeline *media_entity_pipeline(struct media_entity *entity);
+
/**
* media_entity_get_fwnode_pad - Get pad number from fwnode
*
--
2.34.1
